"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Improvement of photovoltaic conversion in sexithiophene-based photovoltaic cell with selfassembling dipole molecules

H. BEDIS OUERGHEMMI1,* , F. KOUKI1, H. BOUCHRIHA1, F. GARNIER1

Affiliation

  1. UMAO, Faculté des Sciences de Tunis, Campus Universitaire, 2092 El-ManarI, Tunis, Tunisia

Abstract

In this paper, we study in the first the electrical and optical behaviours of organic photovoltaic cell based on thin film of sexithiophene (6T). We describe from current vs. applied voltage and impedance spectroscopy the mechanisms controlling conduction in this device. From absorption spectra, the action spectra and their modulation by Gosh model; we can evaluate motilities of generated photocarriers. In the second, we study the effect self-assembled dipole molecules (SAM) of benzoic acid on the photovoltaic behavior. From current-voltage characteristics after illumination we can estimate photovoltaic parameters of elaborated samples that shift according to orientation and the magnitude of dipole moment of molecule SAM. This Improvement involves a remarkable increase of the efficiencies of these devices..

Keywords

Photovoltaïc cell, Sexithiophene, Dipole molecules, Photogeneration, Efficiency.

Submitted at: May 5, 2010
Accepted at: Sept. 15, 2010

Citation

H. BEDIS OUERGHEMMI, F. KOUKI, H. BOUCHRIHA, F. GARNIER, Improvement of photovoltaic conversion in sexithiophene-based photovoltaic cell with selfassembling dipole molecules, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 9, pp. 1986-1992 (2010)